In San Francisco, the last Monday Night Football game of the NFL season is a significant moment for Bay Area sports fans. The San Francisco 49ers and Atlanta Falcons are playing the final regular season game at historic Candlestick Park.

Two astronauts --- one of them a University of Illinois graduate --- ended their spacewalk outside the International Space Station a bit early on Saturday, because they managed to finish their work sooner than expected.

On Sunday, visitors of Allerton Park in Monticello will have a chance to tour the famous mansion located on the property. Robert Allerton is well known for his love of art, and his donation of more than 6,600 items to the Art Institute of Chicago. In 1900, he built the mansion. Illinois Public Media’s Sean Powers recently got a tour of it by Matt Smith, the marketing director at the park.

The tours of the mansion begin this Sunday from noon until 4pm. Each tour will last approximately 45 minutes, and there is a $5 charge for each guest. Children under two can get in free. Click here for more information.

As we near the end of 2013, NPR is taking a look at the numbers that tell the story of this year. Numbers that, if you really understand them, give insight into the world we're living in, right now. Over the next two weeks, you'll hear the stories behind these numbers, which range from zero to 1 trillion.